I understand you want the best for your kid! No right answers here! It appears important to me, however, that your mother also make an effort to see her grandson. In order to make sure this does bot become a horrendous ordeal for you (and teaches your son all the wrong things about relationships) do not let her dictate all the conditions (when, where, how to get there). Ask her to contribute, to commit and agree that there are consequences if she does not hold up her commitment. If she agrees to drive 30 minutes you way and you drive 30 minutes and she does not comply, you are probably not interested in her having a relationship with you or your son. She may have issues but she probably knows that her behavior has consequences: it is up to you (and for everyone's benefit) to reinforce them. I wish you the best of luck!

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