Good to hear your pediatrician is not concerned, but is monitoring. She sounds like a pretty perceptive and thoughtful doctor (most pedies probably wouldn't have either tested your DC with that question, or noticed how strong her receptive language is). Notice that your DC is exhibiting sophisticated receptive language in her L2 (not your primary household language). Her skills are probably even stronger in your home language.
Also, the average toddler takes her first steps at 15 months, so being a non-walker right now is well within the range of developmentally typical.
And, as always, remember to spend more time and energy on treasuring each fleeting moment of discovery with her than on worrying about her progress!
