In your dream, your mom represents your higher, more loving self. The hill you are climbing symbolizes a challenge, or an obstacle that you are trying to overcome. The lilacs indicate some subconcious information that is pleasant to you. This first part of the dream tells a story of how you are getting a deep sense of pleasure or joy overcoming an obstacle for a higher cause. For example; you may be given up a golf trip to reconnect with your kids. While interacting/playing with them, your inner child is stirred. Familiar joy comes to you.
The woman at the top represents an aspect of your action or behavior that makes you realise that you do have a higher calling and that you have indeed been missing out. Look over your life and see where you have been on a path to 'take care' of something or someone. See how the process of meeting these challenging needs has caused you to remember the loving, joyful moments. And now, you can see how you've been 'missing'. I hope this helps in some way. God bless.