Tretinoin - Retin-A has just been given to my 11 year old daughter, are there any risks that I?

can be a great treatment for acne. Unfortunately, peeling and flaking of the skin are common side effects. These side effects tend to be the worst within the first few weeks of starting Retin-A. Luckily, there are steps you can take to help limit skin irritation and flaking.
http://acne.about.com/od/acnetreatments/f/retinafaq.htm

This question should have been answered by the Dermatologist when she was given this medication.

Now did you see a Dermatologist and he/she prescribed this medication... or was it someone else... as you say in your Q:
"Tretinoin - Retin-A has just been given" this to me is not specific enough.

IF YOU HAVE NOT BEEN TO THE DERMATOLOGIST, I STRONGLY ADVICE YOU TO MAKE AN APPOINMENT.BEFORE APPLYING THE MEDICATION.

My answer

I believe she will be fine as this treatment is a topical one not oral.

Now if she was taking Tretinoin-oral, then I would be more concerned with the possible side effects... I am not Doctor/Dermatologist... from a caring individual

Tretinoin (Retin-A) is a derivative of Vitamin A and is the treatment of choice for comedonal acne, or whiteheads and blackheads. It works by increasing skin cell turnover promoting the extrusion of the plugged material in the follicle. It also prevents the formation of new comedones. Tretinoin is also the only topical medication that has been proven to improve wrinkles.

SIDE EFFECTS: Immediately after applying, the skin may feel warm or mild stinging or redness may occur. Some peeling of the skin may occur. These effects should subside as your skin adjusts to the medication. If they persist or become bothersome, inform your doctor. This medicine may also increase sun sensitivity. Notify your doctor if you experience: blistering, crusting, redness, severe burning or swelling of the skin. If you notice other effects not listed above, contact your doctor or pharmacist.

PRECAUTIONS: This medication can increase sensitivity to sunlight, wind and cold. Avoid prolonged exposure to the sun and sunlamps. Wear protective clothing and use an effective sunscreen. Use mild soap when washing your face. Do not wash face excessively. Abrasive soaps, cleansers, medicated creams or lotions can increase skin irritation. Consult your doctor or pharmacist about their use. Use other acne preparations with caution while using this medication. This medication is not recommended for use during pregnancy. Consult your doctor for more details. It is not known if this medication passes into breast milk. Consult your doctor before breast-feeding.