I am paying my daughters student loans, but she is no longer a dependent. However, at the time of the loads she was my dependent. Aren't I eligible to claim the credit?

If you are liable for the loan you can deduct a portion of the interest paid. 

Yes, if you meet the third rule. You meet the first two rules: you actually paid the interest and she was your dependent at the time the loans paid educational expenses.

The third is that you must be legally obligated to pay it.  That is, the loan was in your name or you were a co-signer.