I don't believe sending her flowers would be considered harassment.
You might have a note on the card that reads 'I'm sorry.
Hope we can remain friends.
After that along with your letter of apology I don't think I would try anything.
You will find more information about Is Sending Flowers Considered Harassment?
here:
http://discountflowerscheap.com/is-sending-fl...
Be sure do post your comments below