Should I make any effort with flakey friend?

My friend *Tammy* had a terrible life and suffers from bipolar disorder. She keeps flaking out on plans, after assuring me she wants to be friends. Should I give her a birthday gift, if she shows up, as her birthday’s coming up in a few months’ time; or should I just send her a birthday text?

Should I make any effort with flakey friend?
Post Opinion