Should I accept?

To make a long story short. my Biological dad left my mother when she was 7 months pregnant with me. His excuse was that his mother would not let him marry her because he first had to buy her (his mother) a house. She never spoke to him after that and he ended up marrying a friend of hers about a year later.

My point: I was contacted by his sister through my aunts restaurant (I never have had or wanted to have contact with any part of that family), that my 'dad' would like to contribute to the wedding. He does not want to participate, just contribute.

So you all can understand tha every little help counts, but I am torn between accepting and not. I feel that A. to little to late and B. it would be disrespectful to my mom, she went through somuch s*it b/c of him.

What are your opinions?
Sorry so long! TIA!!!