my dog only pees on walks. we are trying to get her to pee on the patio. we have pee pads, fake grass, pheromone spray, i've even leashed her up and walked the patio. she always waits for walks. today i haven't taken her on the walk because i don't want her to train me. it has been 15 hours since she has gone. i take her out every 30 minutes. she has been sniffing around but will not relieve herself. should i give in and walk her or will she eventually go and i should just wait it out? help!