Don't just assume they lack the inability to get there because you're hitting it long or hard
"A bad workman complains about his tools, yunno"
Several things can prevent a woman from reaching orgasm
Some might be embarrassed, some see it as sin, some have previous issues with sex like rape or molestation, guilt
It takes a lot of communication, back and forth, understanding to understand what the underlying issue could be, is there need for a therapist?
Different strokes for different folks, some require external support from toys for example, but some men are to insecure to allow that, because... "Does it mean my preek cannot make you cum?